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| author |   Dou Liyang <douly.fnst@cn.fujitsu.com> | 2017-12-04 12:03:12 +0800 |
|---|---|---|
| committer |   Thomas Gleixner <tglx@linutronix.de> | 2017-12-28 12:32:06 +0100 |
| commit | 4fcab6693445cfb84f2b65868c58043535090e52 (patch) | |
| tree | 4e1cc9ffdd07d206ce6345d9111bfbe2cc1c5a59 /arch/x86/kernel/apic/apic.c | |
| parent | x86-32: Fix kexec with stack canary (CONFIG_CC_STACKPROTECTOR) (diff) | |
| download | linux-dev-4fcab6693445cfb84f2b65868c58043535090e52.tar.xz linux-dev-4fcab6693445cfb84f2b65868c58043535090e52.zip | |
x86/apic: Avoid wrong warning when parsing 'apic=' in X86-32 case
There are two consumers of apic=:
apic_set_verbosity() for setting the APIC debug level;
parse_apic() for registering APIC driver by hand.
X86-32 supports both of them, but sometimes, kernel issues a weird warning.
eg: when kernel was booted up with 'apic=bigsmp' in command line,
early_param would warn like that:
...
[ 0.000000] APIC Verbosity level bigsmp not recognised use apic=verbose or apic=debug
[ 0.000000] Malformed early option 'apic'
...
Wrap the warning code in CONFIG_X86_64 case to avoid this.
Signed-off-by: Dou Liyang <douly.fnst@cn.fujitsu.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: peterz@infradead.org
Cc: rdunlap@infradead.org
Cc: corbet@lwn.net
Link: https://lkml.kernel.org/r/20171204040313.24824-1-douly.fnst@cn.fujitsu.com
Diffstat (limited to 'arch/x86/kernel/apic/apic.c')
| -rw-r--r-- | arch/x86/kernel/apic/apic.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/x86/kernel/apic/apic.c b/arch/x86/kernel/apic/apic.c index 6e272f3ea984..880441f24146 100644 --- a/arch/x86/kernel/apic/apic.c +++ b/arch/x86/kernel/apic/apic.c @@ -2626,11 +2626,13 @@ static int __init apic_set_verbosity(char *arg) apic_verbosity = APIC_DEBUG; else if (strcmp("verbose", arg) == 0) apic_verbosity = APIC_VERBOSE; +#ifdef CONFIG_X86_64 else { pr_warning("APIC Verbosity level %s not recognised" " use apic=verbose or apic=debug\n", arg); return -EINVAL; } +#endif return 0; } |